Coconino Sandstone

Posted: January 26th, 2010 under Answers in Genesis, Creation Blog.
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The Coconino Sandstone is a desert sandstone that is prominent in the Grand Canyon.  Young earth creationists commonly attack this sandstone, trying to prove that it was deposited underwater.  In this rebuttal, the claims of one of these attacks are examined.  Click here to read this article.

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  • Comment by Tim Helble — April 6, 2010 @ 10:31 pm


    Hey Greg – In your review of Chapter 4 of Grand Canyon: Monument to Catastrophe, you state:

    “Here is where the Flood model for these rock layers really disintegrates. These 4,000 feet of strata provide ample evidence for millions of years. By the young earth creation science model, the Grand Canyon layers are all “early flood.” Since the waters prevailed on the earth about 370 days, these layers all had to form in the first 185 days of the Flood. That is a deposition rate of 21 feet of sediment per day!”

    Since Austin says the “early Flood” duration was 150 days, I was wondering you you used 185 days instead?

  • Comment by GN — April 7, 2010 @ 11:00 pm


    I know where I got it (370/2=185), however, I must dig deeper to find out why I did it this way. Austin divides rocks into Early Flood and Late Flood, hence I may have just divided the entire time in half. It is probably better to use 150. I’ll probably make this adjustment after I look into it again. Thanks.

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